1. Applied Palaeontology and Biostratigraphy Research Unit, Department of Biology, Faculty of Science; Mahasarakham University; Mahasarakham Thailand
2. Palaeontological Research and Education Centre; Mahasarakham University; Mahasarakham Thailand
3. State Key Laboratory of Geological Processes and Mineral Resources; China University of Geosciences; Wuhan China
4. School of Physical Sciences; University of Tasmania; Hobart Tasmania Australia